Counterweight pulling plate device for crane and crane

Abstract

The invention relates to a counterweight pulling plate device for a crane. The device is characterized by comprising a rotary plane balancing stand used to be connected with the top of a mast of the crane, at least two sets of luffing plane balancing stand (10) connected with the lower part of the rotary plane balancing stand and at least two counterweight connection plates (29) connected with the lower part of each set of luffing plane balancing stand (10). The invention also relates to a crane. According to the invention, a space-formula wide-plane counterweight connection mode is formed by the rotary plane balancing stand and the luffing plane balancing stands of the counterweight pulling plate device, so the center of gravity of an integral counterweight body is effectively controlled to be in a plane formed by hinge points, stability of counterweight in a luffing plane and in a rotary plane is guaranteed, place adaptability of the whole crane is enhanced, and operation security of the whole crane is improved; furthermore, through a combined structure of a plurality of balancing stands, stress uniformity of a pulling plate and a mast structure can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a counterweight pulling plate device for a crane and the crane. Background technique [0002] In order to meet the hoisting demand for super-large equipment in domestic petroleum, petrochemical, nuclear power, wind power, steel and other large-scale engineering projects, cranes are becoming more and more super-large, with higher lifting height, larger working range and stronger lifting capacity. Among various types of cranes, crawler cranes have become an indispensable tool in the installation of large equipment due to the precision of their hoisting movements. With the development of large scale, a series of problems in the process of design, production, transportation, installation and use have seriously restricted the development of crawler cranes, which urgently need to be solved by designers. [0003] The counterweight pull plate (the pull plate device used to...

AI Technical Summary

Problems solved by technology

[0005] In traditional small-tonnage cranes, the counterweight pull plate is usually in the form of connecting multiple pull plates to the counterweight in one plane, such as a counterweight pull plate device with four pull plates in one plane. For crawler cranes with larger tonnage (especially super-large tonnage), the counterweight pull plate has certain defects. For example, it may not be balanced enough on uneven ground, the counterweight is easy to overturn, and it will cause local stress on the mast. The problem of being too large, and then the requirements for the flatness of the ground and the structure of the crane mast are relatively high

[0006] In order to improve the local force of the mast, a counterweight tension plate structure using a large balance beam has also appeared at present, but the balance beam of this structure is huge in size, requiring a large auxiliary crane and a high-elevation work platform, and personnel need to work on heights. Resulting in difficult, time consuming and costly installation

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